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Brooklyn Group

Past Producer in Granite county in Montana, United States with commodities Copper, Gold, Lead, Silver, Zinc
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Public Land Survey System information
  6. Commodities
  7. Materials information
  8. Nearby scientific data
  9. Ore body information
  10. Economic information about the deposit and operations
  11. Mining district
  12. Land status
  13. Ownership information
  14. Production statistics
  15. Reserves and resources
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10245529
MRDS ID W014688
MAS/MILS ID 0300390001
Record type Site
Current site name Brooklyn Group
Alternate or previous names Brooklynd Consolidated, Brooklyn Mine, Black and White Mine, Brook Lead, North Star Silver-Lead, Pierre Mine
Related records 10071353

Geographic coordinates

Point of reference Main Entrance
Geographic coordinates: -113.12761, 46.38989 (WGS84)
Elevation 1955
Location accuracy 10(meters)

Site location context

Political divisions (FIPS codes)

Granite(county)

Montana(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Maxville(quadrangle 1:24,000 scale)

Philipsburg(quadrangle 1:100,000 scale)

Butte(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Flint-Rock(hydrologic unit)

Pend Oreille(hydrologic accounting unit)

Kootenai-Pend Oreille-Spokane(hydrologic subregion)

Pacific Northwest(hydrologic region)

Federal lands

Beaverhead-Deerlodge National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States Montana Granite

Public Land Survey System information

Meridian Township Range Section Fraction State
Montana Principal 007 N 012 W 05 SESENE Montana

Commodities

Commodity Importance
Copper Secondary
Gold Secondary
Lead Secondary
Silver Primary
Zinc Critical Secondary

Materials information

Materials Type of material
Galena Unknown
Gold Unknown
Pyrite Unknown
Smithsonite Unknown
Sphalerite Unknown
Tetrahedrite Unknown
Tetrahedrite Unknown

Nearby scientific data

Main Entrance (1) -113.12761, 46.38989
ListMap

Economic information

Ore body information

  • Strike N30W
    Dip 90
    Thickness 8M
    Length 610M
    Width 116M
    Depth to top 3M
    Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 SHEAR ZONE
    Shape of Orebody #1 TABULAR
    Type of Orebody #2 REPLACEMENT
    Primary mode of Origin HYDROTHERMAL
    Primary Ore Control CONTACT ZONE
    Secondary Ore Control FAULTING
    Degree of Wallrock Alter. INTENSE
    Type of Wallrock Alter. #1 SERICITIC
    Strike And Dip N30W:90
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. 3
    Min. Thick. Unconsol. Mat. 2
    Date of Last Modification 830316
  • Area 113HA
    Field Value
    Total Surface Area (HA) 113
    Date of Last Modification 910418

Economic information about the deposit and operations

Operation type Underground
Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1907
Year of first production 1907

Mining district

District name Boulder Creek District

Land status

Ownership category National Forest

Ownership information

  • Type Owner
    Owner Black And White Mining Co. Of Missoula
    ID 2400341
    Interest 100
    Home office Montana
    Year 1978

Production statistics

  • Year 1964
    Description 522ag;.35au;Gm/Mt:1.50%Cu 267 Metric Tons Ore/Year
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Copper Copper 2wt-pct
    Major Silver Silver 522g/mt
    Minor Gold Gold 35g/mt
  • Year 1965
    Description 454ag;.22au;Gm/Mt:1.11%Cu 280 Metric Tons Ore/Year
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Copper Copper 1wt-pct
    Major Silver Silver 454g/mt
    Minor Gold Gold 22g/mt
  • Year 1966
    Description 302gm/Mtag:.11zn;.11pb;.87cu;% 42 Metric Tons Ore/Year
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Copper Copper 87wt-pct
    Minor Zinc Zinc 11wt-pct
    Major Silver Silver 302g/mt
    Minor Lead Lead 11wt-pct
  • Year 1968
    Description 295gm/Mtag:2.Ozn;1.Opb;2.Ocu;% 5 Metric Tons Ore/Year
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Copper Copper 2wt-pct
    Minor Zinc Zinc 2wt-pct
    Major Silver Silver 295g/mt
    Minor Lead Lead 1wt-pct
  • Year 1970
    Description 816gm/Mtag:2.Opb;5.Ocu;% Grade Of Ore 5 Metric Tons Ore/Year
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Copper Copper 5wt-pct
    Major Silver Silver 816g/mt
    Minor Lead Lead 2wt-pct
  • Year 1973
    Description 61gm/Mtag:5.38zn;3.1opb;.94cu;% 47 Metric Tons Ore/Year
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Copper Copper 94wt-pct
    Minor Zinc Zinc 5wt-pct
    Major Silver Silver 61g/mt
    Minor Lead Lead 3wt-pct

Reserves and resources

  • Type In-situ
    Estimate year 1980
    Indicated 145000mt ore
    Demonstrated 145000mt ore
    Inferred 907000mt ore
    Total resources 1052000mt ore
    Commodity Subtype Grade units Group Importance Year
    Lead Pb 1.1 wt-pct Lead Minor 1980
    Silver Ag 254 g/mt Silver Major 1980
    Gold Au 0.69 g/mt Gold Minor 1980
    Zinc Zn 2.7 wt-pct Zinc Minor 1980
    Copper Cu 0.36 wt-pct Copper Minor 1980

Comments on the reserve resource information

  • COPPER ALSO SHOWS AS MALACHITE

Reference information

Bibliographic references

  • Deposit

    MONTANA DEPARTMENT OF STATE LANDS. ABANDONED HARDROCK MINES

  • Deposit

    PRIORITY SITES, SUMMARY REPORT, MARCH 1994, P. 5-79.

  • Deposit

    MONTANA BUREAU OF MINES & GEOLOGY BULLETIN 95, 1975, P. 8.

  • Deposit

    MONTANA BUREAU OF MINES & GEOLOGY BULLETIN 20, 1957, P. 16.

  • Deposit

    EMMONS,W.H.,CALKINS,F.C. GEOLOGIC ATLAS OF THE UNITED STATES

  • Deposit

    (PHILIPSBURG FOLIO). U.S. GEOLOGICAL SURVEY FOLIO, 1915,

  • Deposit

    25 PP.

  • Deposit

    EMMONS, W.H., F.C. CALKINS, GEOLOGY AND ORE DEPOSITS OF THE

  • Deposit

    PHILIPSBURG QUADRANGLE. U.S. GEOLOGICAL SURVEY

  • Deposit

    PROFESSIONAL PAPER NO. 78, 1913, 249 PP.

General comments

Subject category Comment text
Deposit MINERAL RESERVES ARE TAKEN FROM WAR MINERALS REPORT DEC.1942 INFORMATION INDICATES ORE WAS HYDROTHERMALLY INTRODUCED
Environmental Factors TWO SMALL IMPOUNDMENTS WERE CONSTRUCTED BETWEEN THE UPPER MINE WORKINGS AND BOULDER CREEK. THE WASTE MATERIAL IN THESE IMPOUNDMENTS WERE EITHER MILL TAILINGS OR ERODED WASTE ROCK FROM THE WASTE ROCK DUMPS ABOVE. THERE WAS NO EVIDENCE OF A MILL STRUCTURE ON-SITE, AND NO HISTORICAL ACCOUNTS OF MILLING ON-SITE WERE FOUND. THERE WERE NO DISCHARGING ADITS OR SHAFTS ASSOCIATED WITH THIS SITE. BOULDER CREEK FLOWED ALONG THE BASE OF THE LOWER WORKINGS. OBSERVED RELEASES WERE DOCUMENTED FOR MERCURY AND LEAD. MAXIMUM CONTAMINANT LEVELS WERE NOT EXCEEDED IN THE SAMPLES COLLECTED. ENVIRONMENTAL COMMODIT: TABLE K - WASTE MATERIAL (EITHER MILL TAILINGS OR ERODED WASTE ROCK.

Reporter information

Type Date Name Affiliation Comment
Reporter 20-DEC-96 Lindsey, David S. U.S. Bureau of Mines

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

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